Improvement in door-gongs



'c..w. PENFIELD,

ADoor-Gungs,

N0. 143,996. Patented 0ct.28,l873.

UNITED STATES PATENT GEEIGE.

CHARLES W. PENFIELD, OF NEW BRITAIN, ASSIGNOR TO JOHN P. CONNELL, OF KENSINGTON, CONNECTICUT.

IMPROVEMENT IN Doon-cones.

Specicationforming part of Letters Patent No. 143,996, dated October 28, 1873; application filed August l2, 1873.

To all whom it may concern.'

Be it known that I, CHARLES W. PEN- FEELD, of New Britain, in the county of Hartford and State of Connecticut, have invented certain newand useful Improvements in Gong- Bells, of which the following is a specification, referencebeing had to the accompanying drawings, in which- Figure 1 is a top view of the bell looking flat down upon the interior mechanism, the parts being in their normal position, or position of rest. Fig. 2 is a similar view, except that the hammer is just on the point of being tripped for a stroke.

The letter c indicates the base-plate of the bell; b, the central part, which supports the soundingshell c, a part of which is seen in the drawings. The letterd indicates a slide, which reciprocates on the base-plate a, being held thereto by the guide-loops all d2. This slide has a slot, cl3, which straddles the pin b. To the top of this slide is pivoted a peculiarlyshaped pawl, e, borne upon by the spring el.

The letter f indicates the hammer-arm, bearing the hammer-head f1, and pivoted on the pinfz. The arm t' projects from the base of the hammer-arm, and operates in connection with the pawl e. The spring e2 bears upon the spur z" projecting from the base of the hammer-arm, and gives the hammer its stroke. The pull-wire is attached to the outer end of the slide d. y

When the slide d is pulled backward the pawl e pulls the arm i and the hammer backward for a stroke. The shape of the point or toe ofthe pawl is such that as it draws back Ward it tends to draw oft' the arm i, and the arm t', being drawn back far enough, moves laterally away from the pawl e, so that the two disengage, and-the hammer is tripped for a stroke on the sounding-shell. dicates the shoulder, against which the arm i strikes, allowing the hammer-head, by the elasticity of the hammer-arm, to strike and sound the sounding-shell. The spring el returns the slide d and pawl e to normal position, the pawl swinging outward and past the end of the arm z'. The two springs el and e2 are made of one piece of wire coiled around the pillar or pin x.

I claim as my invention- The combination of the slide d, having longitudinal but not lateral motion, pawl e, and hammer-arm bearing the arm i, all substantially as described.

CHARLES W. PENFIELD. Witnesses:

WM. E. SnvroNDs, JOHN POLLITT.

The letter s in- 

